Extend handling of immediates on ARM's SystemTap SDT probe support
Continuing my series of fixes on the SystemTap SDT support for the ARM/AArch64 architectures, this patch now extends how ARM's SDT specific parser handles literal numbers (immediates). Currently, it only accepts "#" as the prefix. However, according to "info '(as) ARM-Chars'", expressions can also have "$" and nothing as a prefix. This patch extends the parser to accept those options. 2013-12-28 Sergio Durigan Junior <sergiodj@redhat.com> * arm-linux-tdep.c (arm_stap_is_single_operand): Accept "$" as a literal prefix. Also accept no prefix at all. (arm_stap_parse_special_token): Likewise. (arm_linux_init_abi): Likewise.
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@ -1,3 +1,10 @@
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2013-12-28 Sergio Durigan Junior <sergiodj@redhat.com>
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* arm-linux-tdep.c (arm_stap_is_single_operand): Accept "$" as a
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literal prefix. Also accept no prefix at all.
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(arm_stap_parse_special_token): Likewise.
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(arm_linux_init_abi): Likewise.
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2013-12-28 Sergio Durigan Junior <sergiodj@redhat.com>
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PR tdep/15653
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@ -1116,7 +1116,7 @@ arm_linux_displaced_step_copy_insn (struct gdbarch *gdbarch,
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static int
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arm_stap_is_single_operand (struct gdbarch *gdbarch, const char *s)
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{
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return (*s == '#' /* Literal number. */
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return (*s == '#' || *s == '$' || isdigit (*s) /* Literal number. */
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|| *s == '[' /* Register indirection or
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displacement. */
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|| isalpha (*s)); /* Register value. */
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@ -1183,8 +1183,8 @@ arm_stap_parse_special_token (struct gdbarch *gdbarch,
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++tmp;
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tmp = skip_spaces_const (tmp);
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if (*tmp++ != '#')
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return 0;
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if (*tmp == '#' || *tmp == '$')
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++tmp;
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if (*tmp == '-')
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{
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@ -1235,7 +1235,7 @@ static void
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arm_linux_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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{
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static const char *const stap_integer_prefixes[] = { "#", NULL };
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static const char *const stap_integer_prefixes[] = { "#", "$", "", NULL };
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static const char *const stap_register_prefixes[] = { "r", NULL };
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static const char *const stap_register_indirection_prefixes[] = { "[",
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NULL };
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